Biocide silver nanoparticles in two different silica-based coating

A. Babapour, B. Yang, S. Bahang, W. Cao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Silica-based coatings containing biocide silver nanoparticles have been synthesized using low temperature sol-gel method. Two different silane based matrices, phenyltriethoxysilane (PhTEOS) and tetraethyl orthosilicate (TEOS), were selected as precursor to prepare silica-based film. The films were analyzed by using UV-visible spectrophotometry, atomic force microscopy (AFM) and scanning electron microscopy (SEM) for their optical, surface morphological as well as structural properties. Optical properties of nanosilver in these two matrices showed that the peak absorption observed at different wavelength, which is due to the fact that optical absorption of nanoparticles is affected by the surrounding medium. It is also found that the silver absorption has higher intensity in PhTEOS than in TEOS matrix, indicating higher concentration of silver nanoparticles being loaded into the coating. To study silver release property, the films were immersed in water for 12 and 20 days. AFM and SEM analyzes present that higher concentration of silver nanoparticles and smaller particle sizes were synthesis in PhTEOS coating and consequently, more particles remains on the surfaces after 20 days which leads to longer antibacterial activity of PhTEOS coating.

Original languageEnglish (US)
Title of host publicationInternational Conference on Fundamental and Applied Sciences 2012, ICFAS 2012
Pages681-684
Number of pages4
DOIs
StatePublished - 2012
Event2nd International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012 - Kuala Lumpur, Malaysia
Duration: Jun 12 2012Jun 14 2012

Publication series

NameAIP Conference Proceedings
Volume1482
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Conference on Fundamental and Applied Sciences 2012, ICFAS 2012
Country/TerritoryMalaysia
CityKuala Lumpur
Period6/12/126/14/12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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